According to Dalton’s Law, the total pressure exerted by a gas mixture equals________________?
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Answer: C. sum of the partial pressures of all
Explanation
Dalton’s Law establishes the fundamental behavior of ideal gas mixtures in physics. The total pressure exerted equals the mathematical sum of individual partial pressures. Each gas contributes to the total pressure independently of the other present gases. Partial pressure is the pressure each gas would exert if it occupied the total volume alone. Gases must not chemically react with one another for Dalton’s Law to apply accurately. The law assumes ideal gas behavior under standard temperature and pressure conditions.
Respiratory physiology relies on Dalton’s Law to explain oxygen and carbon dioxide exchange. Anesthesiologists calculate partial pressures of anesthetic gas mixtures during surgical procedures. Understanding gas laws is essential for safe delivery of inhalation sedation in dentistry. Taking the greater pressure ignores the additive contributions of coexisting gas species. Averaging partial pressures violates the fundamental additive nature of gas mixtures. Dividing by molecular weight introduces incorrect mass-dependent scaling factors.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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